Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K31/00—Medicinal preparations containing organic active ingredients
  • A61K31/185—Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
  • A61K31/19—Carboxylic acids, e.g. valproic acid
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P13/00—Drugs for disorders of the urinary system
  • A61P13/02—Drugs for disorders of the urinary system of urine or of the urinary tract, e.g. urine acidifiers
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P15/00—Drugs for genital or sexual disorders; Contraceptives
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P25/00—Drugs for disorders of the nervous system
  • A61P25/04—Centrally acting analgesics, e.g. opioids
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P37/00—Drugs for immunological or allergic disorders
  • A61P37/08—Antiallergic agents
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P9/00—Drugs for disorders of the cardiovascular system

Definitions

• LTB4 leukotriene B4
• chemokinesis aggregation degranulation and superoxide generation.
• Administration of LTB4 induces inflammatory responses, i.e. PMN accumulation, increased vascular permeability, edema formation and hyperalgesia.
• LTB4 may also act synergistically with prostaglandins and other inflammatory mediators to exacerbate inflammatory, diseases.
• LTB4 has been detected in high concentrations in the inflammatory site in animal models and in inflammatory lesions in humans.
• LTB4 is thought to be a critical mediator of inflammatory, immediate hypersensitivity, renal, cardiovascular, and anphylactoid diseases and may possibly be involved in arthritis and other delayed type hypersensitivity diseases. Agents that interfere with the actions of LTB4, by blocking its action at the receptor, may have valuable therapeutic effects in treating these diseases.
• This invention relates to the use of compounds of formula (I) or a pharmaceutical composition containing a compound of formula (I) in the manufacture of a medicament having LTB4 inhibitory activity.
• Compounds with such activity are useful in the treatment of diseases in which LTB4 is a factor such as immunological diseases, in particular inflammatory hypersensitivity, renal, cardiovascular, and anaphylactoid diseases.
• the compound useful in the invention are represented by the following structure formula (I): wherein m is 1, 2 or 3; n is 1, 2 or 3; p is 0, 1 or 2; R′ is hydrogen or methyl; R is wherein R1 is (S) a -(CH2) b -(T) c -B; a is 0 or 1; b is 5 to 12; c is 0 or 1; S and T are independently sulfur, oxygen, or CH2 with the proviso that S or T are nor sulfur when p is 1 or 2; and B is C1 ⁇ 4alkyl, ethynyl, trifluoromethyl, or phenyl optionally monosubstituted with Br, Cl, F, CF3, C1 ⁇ 4 alkoxy, C1 ⁇ 4 alkyl, methylthio, or trifluoromethylthio; R2 and A are independently selected from hydrogen, bromo, chloro, methyl, trifluoromethyl, hydroxy, methoxy or nitro; or R1 is
• This invention comprises inhibiting the effects of LTB4 by administration of compounds represented by the following general structural formula (I) wherein m is 1, 2 or 3; n is 1, 2 or 3; p is 0, 1, or 2; R′ is hydrogen or methyl; R is wherein R1 is (S) a -(CH2) b -(T) c -B; a is 0 or 1; b is 5 to 12; c is 0 or 1; S and T are independently sulfur, oxygen, or CH2 with the proviso that S or T are not sulfur when p is 1 or 2; and B is C1 ⁇ 4 alkyl, ethynyl, trifluoromethyl, or phenyl optionally monosubstituted with Br, Cl, F, CF3, C1 ⁇ 4 alkyl, methylthio, or trifluoromethylthio; R2 and A are independently selected from hydrogen, bromo, chloro, methyl, trifluoromethyl, hydroxy, methoxy or nitro; or R1 is
• a particular class of compounds useful in this invention are the substituted phenyldioic acid analogs of formula (I) wherein R′ is hydrogen and R is the phenyl radical and are represented by the structural formula (II) wherein m, n, R1 and R2 and A are described above in Formula (I).
• a subgeneric class of these compounds useful in the claimed invention ar the 4,6-dithianonanedioic acid derivatives represented by the following general structural formula (III) wherein R3 is selected from the group consisting of (S) a -(CH2) b -(T) c -B wherein a is 0 or 1; b is 5 to 12; c is 0 or 1; S and T are independently sulfur, oxygen, or CH2; and B is C1 ⁇ 4 alkyl, ethynyl, trifluoromethyl, or phenyl optionally monosubstituted with Br, Cl, CF3, F, C1 ⁇ 4alkoxy, C1 ⁇ 4alkyl, methylthio, or trifluoromethylthio; and R4 and A independently selected from hydrogen, bromo, chloro, methyl, trifluoro-methyl, hydroxy, methoxy or nitro.
• R3 is selected from the group consisting of (S) a -(CH2) b
• R6 is selected from the group consisting of (S) a -(CH2) b -(T) c -B wherein a is 0 or 1; b is 5 to 12; c is 0 or 1; S and T are independently sulfur, oxygen, or CH2; B is C1 ⁇ 4 alkyl, ethynyl, trifluoromethyl, or phenyl optionally monosubstituted with Br, Cl, CF3, C1 ⁇ 4alkoxy, C1 ⁇ 4 alkyl, methylthio, or trifluoromethylthio and R5 and A are independently selected from hydrogen, bromo, chloro, methyl, trifluoromethyl, hydroxy, methoxy, or nitro.
• Additional subgeneric classes of the compounds of Formula (II) are the 3,5-dithiaheptanedioic acid derivatives where both m and n are 1; 4,6-dithiadecanedioic acid derivatives where m is 2 and n is 3; and the 3,5-dithiaoctanedioic acid derivatives where m is 1 and n is 2.
• the 3,5-dithiaheptanedioic acid derivatives of formula (II) are exemplified by 3,5-diathia-4-(2-dodecylphenyl)heptanedioic acid.
• a further class of compounds useful in the method of this invention are the compounds of the formula (I) wherein p is 1. Exemplifying this class of compounds is 5-(2-dodecylphenyl)-4-sulfinyl-6-thianonanedioic acid [formula I wherein m and n are both 2, R′ is hydrogen, R is 2-dodecylphenyl and p is 1].
• the compounds useful in the method of the present invention are acidic and are, therefore, capable of forming salts with pharmaceutically acceptable bases according to procedures well known in the art.
• acceptable bases include organic and inorganic bases, such as ammonia, organic amines and alkali metal bases.
• the compounds of the formula (I) wherein p is 0 are conventionally prepared by forming the dithioacetal derivatives or dithioketal derivatives or aldehydes or ketones, utilizing the appropriate mercaptoalkanoic acids.
• the reaction of the aldehyde or ketone with two equivalents or an excess of the mercaptoalkanoic acid is accomplished at low to moderate temperatures under acidic conditions in an inert solvent.
• inert solvents include chlorinated hydrocarbons, such as methylene chloride, chloroform and dichloroethane.
• the acidic conditions are produced by mineral acids, such as hydrochloric acid and sulfuric acid, or Lewis acids, such as boron trifluoride etherate.
• the reaction temperatures can range from -40°C to ambient temperatures.
• the compounds of the formulae (III) and (IV) are prepared by reacting 3-mercapto-propionic acid with the appropriate aldehyde. Similarly, employing mercaptoacetic acid, the compounds of the formula (I) wherein both m and n are 1 and p is 0 can be prepared. To prepare the compounds of formula (I) wherein m is not equal to n and p is 0, a mixture of the appropriate mercaptoalkanoic acids is employed followed by separation and isolation of the desired compounds.
• the appropriate dithia acid product is conveniently oxidized with either metachloroperbenzoic acid or, when R1 or R2 contains unsaturation, sodium periodate, using one equivalent of either oxidant.
• aldehydes and ketones used above are known or readily prepared utilizing the general procedures described as follows.
• aldehyde precursors to the compounds of the formula (II) wherein R1 is, for example, an alkyl radical containing 8 to 13 carbon atoms are prepared from the appropriate 2-methoxyphenyl-4,4-dimethyloxazoline [see Meyers et al. J. Org. Chem. , 43 1372 (1978)].
• aldehyde precursors of the compounds of the formula (II) wherein R1 or R2 is, for example, an alkoxy radical containing 7 to 12 carbon atoms or a 2(Z),5(Z)-undecadienyloxy radical are prepared by the O-alkylation of the appropriate 2 or 3 hydroxybenzaldehyde with the corresponding alkylating agent.
• the aldehyde precursors to the compounds of the formula (II) wherein R1 or R2 is a 1-alkynyl radical containing 10 to 12 carbon atoms are prepared by coupling a 2 or 3 substituted halobenzaldehyde with the appropriate 1-alkyne in the presence of cuprous iodide and (Ph3P)2PdCl2. [See Hagihara, et al. Synthesis , 627, (1980)]. The catalytic hydrogenation of these alkynyl containing precursors under standard conditions affords the aldehyde precursors of the compounds of the formula (II) wherein R1 of R2 is an alkyl or phenylalkyl radical.
• alkylthio containing aldehyde precursors of the compounds of the formula (II) are prepared by the reaction of the appropriately substituted halothio­alkylbenzene with magnesium and dimethylformamide.
• the phenylthioalkyl containing aldehyde precursors of the compounds of the formula (II) are prepared by the reaction of the appropriately substituted haloalkyl benzoic acid with a thiophenol and triethylamine, followed by reduction with lithium aluminum hydride to the benzyl alcohol and oxidation with manganese dioxide to the desired aldehyde.
• the receptor binding affinity of the compounds used in the method of this invention is measured by the the ability of the compounds to bind to [3H]-LTB4 binding sites on human U937 cell membranes.
• the LTB4 antagonist activity of the compounds used in the method of this invention is measured by their ability to antagonize in a dose dependent manner the LTB4 elicited calcium transient measured with fura-2, the fluorescent calcium probe. The methods employed were as follows.
• U937 cells were obtained from Dr. John Bomalaski (Medical College of PA) and Dr. John Lee (SK&F, Dept. of Immunology) and grown in RPMI-1640 medium supplemented with 10% (v/v) heat inactivated fetal calf serum, in a humidified environment of 5% CO2, 95% air at 37°C. Cells were grown both in T-flasks and in Spinner culture. For differentiation of the U937 cells with DMSO to monocyte-like cells, the cells were seeded at a concentration of 1 x 105 cells/ml in the above medium with 1.3% DMSO and incubation continued for 4 days. The cells were generally at a density of 0.75-1.25 x 106 cells/ml and were harvested by centrifugation at 800 x g for 10 min.
• [3H]-LTB4 binding assays were performed at 25°C in 50 mM Tris-HCl (pH 7.5) buffer containing 10 mM CaCl2, 10 mM MgCl2, [3H]-LTB4, U937 cell membrane protein (standard conditions) in the presence (or absence of varying concentrations of LTB4 or SK&F compounds. Each experimental point represents the mean of triplicate determinations. Total and non-specific binding of [3H]-LTB4 were determined in the absence or presence of 2 ⁇ M of unlabeled LTB4, respectively. Specific binding was calculated as the difference between total and non-specific binding.
• the radioligand competition experiment were performed, under standard conditions, using approximately 0.2 nM [3H]-LTB4, 20-40 ⁇ g of U937 cell membrane protein, increasing concentrations of LTB4 (0.1 nM to 10 nM) or other competing ligands (0.1 ⁇ M to 30 ⁇ M) in a reaction volume of 0.2 ml and incubated for 30 minutes at 25° .
• the unbound radioligand and competing drugs were separated from the membrane bound ligand by a vacuum filtration technique.
• the membrance bound radioactivity on the filters was determined by liquid scintillation spectrometry.
• the fluorescence of fura-2 containing U937 cells was measured with a fluorometer designed by the Johnson Foundation Biomedical Instrumentation Group. Fluorometer is equipped with temperature control and a magnetic stirrer under the cuvette holder. The wavelengths are set at 339 nm for excitation and 499 nm for emission. All experiments were performed at 37°C with constant mixing.
• U937 cells were diluted with fresh buffer to a concentration of 1 x 106 cells/ml and maintained in the dark on ice. Aliquots (2 ml) of the cell suspension were put into 4 ml cuvettes and the temperature brought up to 37°C (maintained in 37°C water bath for 10 min). Cuvettes were transferred to the fluorometer and fluorescence measured for about one minute before addition of stimulants or antagonists and followed for about 2 minutes post stimulus. Agonists and antagonists were added at 2 ul aliquots.
• Antagonists were added first to the cells in the fluorometer in order to detect potential agonist activity. Then after about one minute 10nM LTB4 (a near maximal effective concentration) was added and the maximal Ca2+ mobilization [Ca2+] i was calculated. [Ca2+] i was calculated using the following formula: F was the maximum relative fluorescense measurement of the sample. F max was determined by lysing the cells with 10 ul of 10% Triton X-100 (final Concentration 0.02%). After F max was determined 67 ul of 100 mM EGTA solution (pH 10) was added to totally chelate the Ca2+ and quench the fura-2 signal and obtain the F min .
• the [CA2+] i level for 10nM LTB4 in the absence of an antagonist was 100% and basal [Ca2+] i was 0%.
• the IC50 concentration is the concentration of antagonist which blocks 50% of the 10nM LTB4 induced [Ca2+] i mobilization.
• the EC50 for LTB4 induced increase in [Ca2+] i mobilization was the concentration for half maximal increase.
• the K i for calcium mobilization was determined using the formula: With the experiments described, the LTB4 concentration was 10 nM and the EC50 was 2nM.
• the compounds used in the method of the present invention show significant receptor binding affinity and LTB4 antagonist activity. Data for representative compounds is shown in Table I.
• compositions useful in the methods of the present invention comprise a pharmaceutical carrier or diluent and an amount of a compound of the formula (I) or a pharmaceutically acceptable salt, such as an alkali metal salt thereof, sufficient to produce the inhibition of the effects of leukotriene B4.
• examples of appropriate pharmaceutical carriers or diluents include: for aqueous systems, water; for non-aqueous systems, ethanol, glycerin, propylene glycol, corn oil, cottonseed oil, peanut oil, sesame oil, liquid parafins and mixtures thereof with water; for solid systems, lactose kaoline and mannitol; and for aerosol systems, dichlorodifluoromethane, chlorotrifluoroethane and compressed carbon dioxide.
• the instant compositions may include other ingredients such as stabilizers, antioxidants, preservatives, lubricants, suspending agents, viscosity modifiers and the like, provided that the additional ingredients do not have a detrimental effect on the therapeutic action of the instant compositions.
• compositions and the pharmaceutical carrier or diluent will, of course, depend upon the intended route of administration, i.e. suppositories, parenterally, topically, orally or by inhalation.
• the compositions will comprise a suspension or solution of the active ingredient in water for administration by means of a conventional nebulizer.
• the compositions will comprise a suspension or solution of the active ingredient in a conventional liquified propellant or compressed gas to be administered from a pressurized aerosol container.
• the composition may also comprise the solid active ingredient diluted with a solid diluent for administration from a powder inhalation device.
• the amount of carrier or diluent will vary but preferably will be the major proportion of a suspension or solution of the active ingredient. When the diluent is a solid it may be present in less, equal or greater amounts than the solid active ingredient.
• the pharmaceutical composition will be in the form of a sterile injectable liquid such as an ampul or an aqueous or nonaqueous liquid suspension.
• the pharmaceutical composition will be in the form of a cream, ointment, or spray.
• a compound of Formula (I) is administered to an animal subject in a composition comprising a nontoxic amount sufficient to produce the desired effect.
• the dosage of the composition is selected from the range of from about 1 mg/kg to about 500 mg/kg of active ingredient for each administration, preferably from about 50 to about 100 mg/kg.
• reaction product was extracted into diethyl ether (100 ml) and the organic phase was washed with saturated sodium chloride solution (50 ml) and then dried over anhydrous magnesium sulfate. Evaporation of the organic phase afforded a colorless oil which was purified by flash chromatography over silica gel with 5 percent ethyl acetate in hexane as eluant to afford the desired product as a pale yellow oil.
• Example 2(a) the compound of Example 2(a) (3.62 mmoles) was reacted with 3-mercaptopropionic acid (8.03 mmoles) to yield the desired product as a white crystalline solid (mp 76-78.5°C).
• Example 4(a) (2.26 mmoles) was reacted with mercaptopropionic acid (4.93 mmoles) to yield the desired product as a pale yellow liquid.
• Example 5(a) the compound of Example 5(a) (5.35 mmoles) was reacted with 3-mercaptopropionic acid (11.47 mmoles) to yield the desired product as a white solid (mp 71-74°C).
• the 8-phenyloctyl bromide was prepared from 8-phenyloctanol, carbon tetrabromide and triphenylphosphine in methylene chloride as described in Example 5(a).] After stirring for 24 hours, the reaction mixture was similarly worked up to yield 2-[2-(8-­phenyloctyl)phenyl]-4,4-dimethyloxazoline as an oil. A solution of the oxazoline (11.58 mmoles) in methyl iodide (20 ml) was refluxed under argon for 18 hours. Removal of the volatiles afforded the corresponding 3,4,4-­trimethyloxazolinium iodide as a white solid (mp 76.5-­78°C).
• Example 1(c) To an ice cold solution of the iodide (9.46 mmoles) in methanol (35 ml) was added in portions sodium borohydride (9.20 mmoles). Treatment of the reaction mixture as in Example 1(c) results in the isolation of the desired product as an oil.
• Example 10(a) 0.771 mmoles
• mercaptopropionic acid 1.7 mmoles
• Example 11(a) (2.73 mmoles) was reacted with mercaptopropionic acid (6.01 mmoles) to yield the product as white solid, mp 34-38°C.
• Example 12(a) (2.75 mmoles) was reacted with mercaptopropionic acid (5.97 mmoles) to yield the desired product as a pale yellow liquid. It was converted to the dipotassium salt by dissolving in potassium carbonate solution (15 ml, 0.3 M) and isolated by lyophilization.
• Example 13(a) 2.6 mmoles
• mercaptopropionic acid 5.2 mmoles
• disodium salt by dissolving in sodium carbonate solution (0.5M) and isolated by lyophilization, mp 146-148°C (dec).
• Diisopropylamine (61.8 ml, 441 mmoles) was dissolved in tetrahydrofuran (200 ml) and cooled to 0°C in an ice-methanol bath while stirring under argon.
• a 2.6 M solution of n-butyllithium in hexane (170 ml, 441 mmoles) was added dropwise.
• Toluic acid (30.0 g, 221 mmoles) was then added and the reaction immediately turned a deep red color. This mixture was added slowly to a solution of 1,6-dibromohexane (84 ml, 551 mmoles) in tetrahydrofuran (200 ml) at 0°C.
• Example 14(a) The compound of Example 14(a) (2.5 g, 8 mmoles) was dissolved in dimethylformamide (50 ml), to which was added a mixture of thiophenol (1.3 ml, 12.6 mmoles) and triethylamine (4.7 ml, 33 mmoles) in dimethylformamide (50 ml). The reaction mixture was heated to 80°C for 1-2 hours. The solvents were evaporated and the residue flash chromatographed on silica gel eluted with 15% ethyl acetate in hexane plus 1% formic acid to provide the desired product.
• Example 14(d) The compound of Example 14(d) was dissolved in methylene chloride (5.0 ml), cooled to 0°C and mercaptopropionic acid (0.123 ml, 1.3 mmoles) was added, followed by boron trifluoroide etherate (0.182 g, 1.3 mmoles). The reaction mixture was stirred under argon for 5-10 minutes. The solvent were evaporated and the residue was dissolved in carbon tetrachloride and washed with water. The organic phase was dried over magnesium sulfate, filtered and evaporated to give the desired product.
• methylene chloride 5.0 ml
• mercaptopropionic acid 0.123 ml, 1.3 mmoles
• boron trifluoroide etherate 0.182 g, 1.3 mmoles
• Substituted thiophenol Product 4-fluorothiophenol 4,6-dithia-5-[2-(7-(4-fluorophenylthio)heptyl)phenyl]nonanedioic acid 4-bromothiophenol 4,6-dithia-5-[2-(7-(4-bromophenylthio)heptyl)phenyl]nonanedioic acid 4-methoxythiophenol 4,6-dithia-5-[2-(7-(4-methoxyphenylthio)heptyl)phenyl]nonanedioic acid 3-trifluoromethylthiophenol 4,6-dithia-5-[2-(7-(3-trifluoromethylphenylthio)heptyl)phenyl]nonanedioic acid 4-trifluoromethylthiophenol 4,6-dithia-5-[2-(7-(3-trifluoromethylphenylthio
• Example 14(c)-(e) the compound of Example 15(b) was reduced with lithium aluminum hydride, the benzyl alcohol was oxidized with manganese dioxide and the benzaldehyde was reacted with mercaptopropionic acid to yield the desired product, whose identity was verified by nuclear magnetic resonance, thin layer chromatography and mass spectra data.
• Example 15(b) the compound of Example 15(a) is treated with n-butyllithium followed by 4-trifluoromethylbenzaldehyde to give 2-[8-(4-trifluoromethylphenyl)-7(Z)-octenyl]benzoic acid which is reduced with lithium aluminium hydride to give the desired benzyl alcohol.
• Example 14(e) Employing the procedure of Example 14(e), the compound of Example 16(b) was reacted with mercapto­propionic acid to yield the desired product.
• Example 14(a) 2-(7-bromoheptyl)-­benzoic acid (.5 g., 1.68 mm), was reacted with 4-fluorothiophenol (.322 g., 2.5 mm), and triethylamine (.94 ml, 6.7 mm) in DMF (30 ml) as in Example 14(b) to afford the desired product. This was further purified by flash chromatography over silica gel with 15% ethyl acetate in hexane.
• Example 17(a) The compound of Example 17(a), (.495 g., 1.43 mm), was reacted with lithium aluminum hydride (.057 g., 1.43 mm) in THF(20 ml) as in Example 14(c) to afford the desired product.
• Example 17(b) The compound of Example 17(b), (.213 g., .58 mm), was reacted with MnO2(2.13 g., 24.5 mm) in ethyl acetate (20 ml) as in Example 14(d) to afford the desired product.
• Example 17(c) The compound of Example 17(c), (.202 g., .61 mm) was reacted with mercaptopropionic acid (.107 ml, 1.22 mm) and boron trifluoride etherate (.174 g., 1.22 mm) in CH2Cl2(10 ml) at 0°C as in Example 14(e) to afford a crude product.
• This material was flash chromatographed over silica gel with 40% ethyl acetate in hexane with a trace of formic acid to yield the desired product.
• Example 14(a) The compound of Example 14(a), 2-(7-bromoheptyl)benzoic acid (1 g., 3.34 mm) was reacted with 4-methoxybenzenethiol(.618 ml, 5.03 mm), and triethylamine (1.87 ml, 13.42 mm) in DMF (40 ml) as in Example 14(b) to afford the desired product.
• Example 18(a) The compound of Example 18(a), (.542 g., 1.5 mm), was reacted with lithium aluminum hydride (.061 g., 1.5 mm) in THF (30 ml) as in Example 14(c) to afford the desired product.
• Example 18(b) The compound of Example 18(b), (.448 g., 1.3 mm), was reacted with MnO2(4.48 g., 51.5 mm) in ethyl acetate (50 ml) as in Example 14(d) to afford a crude product. This was further purified by flash chromatography over silica gel with ethyl acetate/hexane.
• Example 18(c) The compound of Example 18(c), (.354 g., 1.03 mm) was reacted with mercaptopropionic acid (.18 ml, 2.07 mm) and boron truflioride etherate (.294 g., 2.07 mm) in CH2Cl2(20 ml) at 0°C as in Example 14(e) to afford the desired product.
• Example 14(a) The compound of Example 14(a), 2-(7-bromoheptyl)benzoic acid (.6 g., 2.01 mm), was reacted with 4-bromothiophenol (.60 g., 3 mm), and triethylamine (1.12 ml, 8.05 mm) in DMF (35 ml) as in Example 14(b) to afford the desired product. This was further purified by flash chromatography over silica gel with ethyl acetate in hexane.
• Example 19(a) The compound of Example 19(a), (.49 g., 1.2 mm), was reacted with lithium aluminum hydride (.048 g., 1.2 mm) in THF (20 ml) as in Example 14(c) to afford the desired product.
• Example 19(c) The compound of Example 19(c), (.324 g., .83 mm) was reacted with mercaptopropionic acid (.144 ml, 1.66 mm) and boron trifluoride etherate (.235 g., 1.66 mm) in CH2Cl2 (15 ml) at 0°C as in Example 14(e) to afford the desired product.
• 5-Bromosalicylaldehyde (1.51 g, 7.5 mm) was dissolved in dry DMF and treated with sodium hydride (.4g, 8.3 mm, 50% oil dispersion). After stirring for 20 minutes, a solution of 1-bromo-undecane in DMF was added dropwise. The reaction was heated to 50-65°C overnight with stirring. The reaction was then poured into ice water, the pH was adjusted to 8.0 with K2CO3 and the mixture was extracted with diethylether. The organic extracts were washed with water, dried over MgSO4 and filtered. The solvent was evaporated to yield an oil which solidifies upon standing.
• 5-Nitrosalicylaldehyde (1.7 g, 10 mm) was dissolved in 20 ml dry DMF and K2CO3 (2.2g, 16mm) was added cautiously. The reaction was stirred at room temperature for 20 minutes and 1-bromoundecane (2.6 g, 11 mm), in 20 ml dry DMF, was added dropwise to the mixture. The reaction was heated at 89°C for 3 days, cooled and poured into 100 ml H2O. The product was extracted with diethyl ether, washed with 5% aqueous Na2CO3 and brine, and dried over MgSO4.
• Example 21(a) The compound in Example 21(a), (1.3g, 4mm) was dissolved in 3-mercaptopropionic acid (10 g, 90 mm) and, with stirring, gaseous hydrochloric acid was bubbled through the solution for a few seconds. The reaction mixture was stirred at room temperature for 15 minutes and poured into 100 ml H2O. After stirring for 1 hour the precipitated white solid was collected by filtration and washed with water. The solid was dissolved in methylene chloride, and this solution was washed with water and dried over MgSo4. Filtration and evaporation of the solvent yielded the desired product as a white solid which melted at 99-100°C.
• an active ingredient such as the compound of Example 1(d) is dissolved in 25 mM sodium carbonate at a concentration of 0.4 percent and aerosolized from a nebulizer operation at an air flow adjusted to deliver the desired aerosolized weight of drug.
• an active ingredient such as the compound of Example 2(b) is admixed with mannitol at a concentration of 1.0 percent and administered from a powder inhalation device adjusted to deliver the desired weight of drug.

Landscapes

• Health & Medical Sciences (AREA)
• Pharmacology & Pharmacy (AREA)
• Veterinary Medicine (AREA)
• Public Health (AREA)
• General Health & Medical Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• Chemical & Material Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Medicinal Chemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Organic Chemistry (AREA)
• Bioinformatics & Cheminformatics (AREA)
• Engineering & Computer Science (AREA)
• Pain & Pain Management (AREA)
• Epidemiology (AREA)
• Biomedical Technology (AREA)
• Endocrinology (AREA)
• Pulmonology (AREA)
• Cardiology (AREA)
• Neurology (AREA)
• Neurosurgery (AREA)
• Rheumatology (AREA)
• Immunology (AREA)
• Reproductive Health (AREA)
• Urology & Nephrology (AREA)
• Heart & Thoracic Surgery (AREA)
• Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
• Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=22541878

Family Applications (1)

Country Status (5)

Families Citing this family (2)

Family Cites Families (8)

• 1988
  • 1988-02-04 US US07/152,191 patent/US4871771A/en not_active Expired - Fee Related
• 1989
  • 1989-01-31 EP EP19890300914 patent/EP0327306A3/de not_active Withdrawn
  • 1989-02-02 JP JP1026497A patent/JPH01226811A/ja active Pending
  • 1989-02-02 AU AU29546/89A patent/AU621337B2/en not_active Ceased
  • 1989-02-02 DK DK049089A patent/DK49089A/da not_active Application Discontinuation

Also Published As

Similar Documents

Legal Events